EP0363707B1 - Method for making a needled felt from slag wool - Google Patents
Method for making a needled felt from slag wool Download PDFInfo
- Publication number
- EP0363707B1 EP0363707B1 EP89117542A EP89117542A EP0363707B1 EP 0363707 B1 EP0363707 B1 EP 0363707B1 EP 89117542 A EP89117542 A EP 89117542A EP 89117542 A EP89117542 A EP 89117542A EP 0363707 B1 EP0363707 B1 EP 0363707B1
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- Prior art keywords
- fact
- felt
- process according
- avivage
- felt web
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Classifications
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
Definitions
- the invention relates to a method for producing needle felt from rock wool, according to the preamble of claim 1.
- rock wool when subjected to a needling process, shows no appreciable improvement in fiber cohesion. It can therefore not be solidified as a needle felt by a needling process, so that in practice a required solidification takes place either by a hardening binder if the felt is required as a more or less rigid plate, or by mechanical means, for example in the form of so-called wire mats , wherein the rock wool felt is quilted by means of a metal wire or the like.
- An aqueous solution or suspension of a non-metal-containing, volatile organic lubricant is proposed as a lubricant, which does not leave any alkaline substances in the needle felt after it has been driven out.
- An aromatic or aliphatic polyglycol ether, fatty acid derivatives such as fatty acid ethanolamide, silicone oils or nonionic surfactants and alkali metal-free anionic surfactants are proposed as suitable lubricants.
- the invention has for its object to provide a method for producing needle felt from rock wool of the type specified in the preamble of claim 1, which leads to a needle felt consisting exclusively of rock wool without the addition of other fibers.
- rock wool with particularly thin fibers is used, and an agent with an unusually high viscosity for such textile additives is added to these fibers in the sense of a finishing agent.
- Rock wool fibers with a small average fiber thickness of preferably less than 6 ⁇ m can be obtained in the transverse blowing process or in the nozzle blowing process using the teaching of the older German patent application P 38 07 420 and are therefore available.
- Finishing agents with a viscosity of preferably For example, over 2000 cP are also available on the market as mineral oil-based dust binders.
- the high viscosity of the finish which is preferably added to the rock wool in a proportion by weight of the agent of at least 0.05%, based on the weight of the dry rock wool felt, surprisingly allows a sliding movement of that of if the upper limit of 10,000 cP is not exceeded the fibers caught in the needles in their anchoring position in the needle felt, but after the action of the needles has ended due to the high viscosity keeps the fibers in the position found by the needling process in the needle felt.
- the cohesion between adjacent fibers is improved and is achieved in such a way that the action of the needles is not limited to one thread or very few threads per needle, but that the threads directly caught by the needles have a driving effect on adjacent threads and thus the strength of the needle felt is further improved. Furthermore, this causes the action of the needle to extend to a larger surrounding area of the respective needle, with the result that the entire rock wool web is compacted considerably, for example in multiples, despite the only selective action of the needles, and with a comparatively high bulk density like a thick textile cloth similar to a woolen blanket good strength and manageability as well as the best possible formability.
- a particularly good needleability of a felt web results from the results of tests carried out if it has a high penetration force according to the Renault test method, as stated in claims 2 and 3.
- felt webs of such a puncture force have a structure which promotes needlability.
- the Renault test is based on a Renault method.
- a sample, format 90 mm x 90 mm, basis weight 5.0 kg / m2 for loose wool and 3.0 kg / m2 for bound material is clamped in a device between perforated plates and pressed together to a thickness of 15 mm.
- the sample is then pierced with a stamp of 30 mm in diameter and a test speed of 10 mm / min, the axis of which is aligned with the axis of the two openings in the plates.
- the lower opening has a circular shape and a diameter of 40 ⁇ m in the example, so that there is a gap between the outer circumference of the stamp and the edge of the lower, supporting opening of 5 mm width.
- the maximum puncture force is measured.
- the needled felt web is made stress-free soon after its needling with a heat treatment at a temperature between about 300 ° C and 500 ° C.
- a heat treatment at a temperature between about 300 ° C and 500 ° C.
- the heat treatment is preferably carried out under pressure loading of the needle felt, in order to avoid a change in the shape of the fibers due to the remaining resilience when the finishing agent is driven out before the tension is released in the rock wool fibers.
- pressure loading of the needle felt in order to avoid a change in the shape of the fibers due to the remaining resilience when the finishing agent is driven out before the tension is released in the rock wool fibers.
- the needle felt web can be treated with a conventional dust-binding agent in order to minimize dust accumulation during further handling.
- Claims 7 to 9 indicate particularly preferred Aviva agents.
- a softening agent according to claim 8 is available on the market under the name "preparol”, and one according to claim 9 is available under the name “compressol”. These agents have a viscosity between 5,000 cP and 7,000 cP, while other dust-binding agents, sizes or similar substances used in the textile industry have a viscosity of only a few hundred cP.
- "Preparol” or “compressol” are emulsified in water, and this elmusion with a water content of about 90% can be sprayed onto the fibers in the chute below the fiberizing unit and thus introduced evenly distributed. Excellent results have been obtained with the use of these finishing agents in an amount of 0.02 to 0.8 percent by weight, based on the dry weight of the rock wool web.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Stringed Musical Instruments (AREA)
- Artificial Filaments (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Nadelfilz aus Steinwolle, nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing needle felt from rock wool, according to the preamble of claim 1.
Es ist bekannt, daß Steinwolle, wenn sie einem Nadelungsvorgang unterworfen wird, keine merkliche Verbesserung des Faserzusammenhaltes zeigt. Sie kann somit nicht durch einen Nadelungsvorgang als Nadelfilz verfestigt werden, so daß eine erforderliche Verfestigung in der Praxis entweder durch ein aushärtendes Bindemittel erfolgt, wenn der Filz als mehr oder weniger steife Platte benötigt wird, oder durch mechanische Mittel, etwa in Form sog. Drahtmatten, wobei der Steinwollefilz mittels eines Metalldrahtes oder dergleichen versteppt wird. Während die Verwendung eines aushärtenden Bindemittels die Einsatzmöglichkeit der so gebildeten Steinwolleplatte infolge ihrer Steifheit und infolge des Eintrags eines nicht hitzebeständigen organischen Bindemittels beschränkt, eignen sich Drahtmatten nicht für den Einsatz in korrosiver Umgebung und ist die erzielbare Rohdichte begrenzt.It is known that rock wool, when subjected to a needling process, shows no appreciable improvement in fiber cohesion. It can therefore not be solidified as a needle felt by a needling process, so that in practice a required solidification takes place either by a hardening binder if the felt is required as a more or less rigid plate, or by mechanical means, for example in the form of so-called wire mats , wherein the rock wool felt is quilted by means of a metal wire or the like. While the use of a hardening binder limits the possible use of the rock wool sheet thus formed due to its rigidity and due to the introduction of a non-heat-resistant organic binder, wire mats are not suitable for use in a corrosive environment and the achievable bulk density is limited.
Es hat daher nicht an Versuchen gefehlt, Steinwolle durch eine Vielzahl von Behandlungen und Zusätzen für einen Nadelungsvorgang geeignet zu machen. Beispielsweise aus der DE-OS 22 32 785, von der die Erfindung im Oberbegriff des Anspruchs 1 ausgeht, ist es bekannt, den Steinwollefasern Asbestfasern als vliesbildender Faserzusatz zuzumischen, um so einen nadelbaren Filz zu erhalten. Da die Asbestfasern eine außerordentlich hohe Friktion auf die Nadeln der Nadelbank ausüben, wird dem Filz weiterhin ein Gleitmittel zugesetzt- welches nach dem Nadelungsvorgang durch Wärmeeinwirkung wieder ausgetrieben wird. Als Gleitmittel wird hierbei eine wässrige Lösung oder Suspension eines nicht metallhaltigen, verflüchtigbaren organischen Gleitmittels vorgeschlagen, welches nach dem Austreiben keine alkalisch reagierenden Substanzen im Nadelfilz zurückläßt. Als geeignete Gleitmittel werden ein aromatischer oder aliphatischer Polyglykolether, Fettsäurederivate wie Fettsäureethanolamid, Silikonöle oder nichtionogene Tenside sowie alkalimetallfreie anionische Tenside vorgeschlagen.There has been no shortage of attempts to make rock wool suitable for a needling process by means of a large number of treatments and additives. For example, from DE-OS 22 32 785, from which the invention is based in the preamble of claim 1, it is known to mix the rock wool fibers with asbestos fibers as a non-woven fiber additive in order to obtain a needle felt. Since the asbestos fibers exert an extraordinarily high friction on the needles of the needle bank, this will Felt also added a lubricant - which is expelled again after the needling process by the action of heat. An aqueous solution or suspension of a non-metal-containing, volatile organic lubricant is proposed as a lubricant, which does not leave any alkaline substances in the needle felt after it has been driven out. An aromatic or aliphatic polyglycol ether, fatty acid derivatives such as fatty acid ethanolamide, silicone oils or nonionic surfactants and alkali metal-free anionic surfactants are proposed as suitable lubricants.
Ein Zusatz von Asbestfasern scheidet jedoch infolge der gesundheitsgefährdenden Wirkung von Asbestfasern von vorneherein aus.However, the addition of asbestos fibers is ruled out from the outset due to the health-threatening effects of asbestos fibers.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung von Nadelfilz aus Steinwolle der im Oberbegriff des Anspruchs 1 angegebenen Art anzugeben, welches zu einem ausschließlich aus Steinwolle, ohne Zusatz anderer Fasern, bestehenden Nadelfilz führt.The invention has for its object to provide a method for producing needle felt from rock wool of the type specified in the preamble of claim 1, which leads to a needle felt consisting exclusively of rock wool without the addition of other fibers.
Die Lösung dieser Aufgabe erfolgt durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.
Es hat sich überraschend gezeigt daß die Lösung der Aufgabe dann gelingt, wenn Steinwolle mit besonders dünnen Fasern verwendet wird, und diesen Fasern im Sinne einer Avivage ein Mittel mit für derartige Textilzusatzstoffe unüblich hoher Viskosität zugesetzt wird. Steinwollefasern mit einer geringen durchschnittlichen Faserdicke von vorzugsweise weniger als 6 µm können im Querblasverfahren oder in Düsenblasverfahren bei Verwendung der Lehre der älteren deutschen Patentanmeldung P 38 07 420 erhalten werden und stehen somit zur Verfügung. Avivagen mit einer Viskosität von vorzugsweise über 2000 cP stehen beispielsweise als Staubbindemittel auf Mineralölbasis ebenfalls auf dem Markt zur Verfügung. Durch die Verwendung besonders dünner Steinwollefasern wird deren Sprödigkeit und Biegewiderstand herabgesetzt, so daß die Fasern leichter von den Nadeln der Nadelbank mitgenommen und in den Steinwollefilz hineingezogen bzw., wenn eine ausreichend große Länge der Fasern vorliegt, durch diesen hindurchgezogen werden. Die Avivage verbessert die Geschmeidigkeit der dünnen Fasern noch erheblich. Die hohe Viskosität der Avivage, die bevorzugt in einem Gewichtsanteil des Mittels von wenigstens 0,05 %, bezogen auf das Gewicht des trockenen Steinwollefilzes, der Steinwolle zugesetzt ist, läßt, wenn die Obergrenze von 10.000 cP nicht überschritten wird, überraschend eine Gleitbewegung der von den Nadeln erfaßten Fasern in ihre Verankerungsposition im Nadelfilz zu, hält aber nach Beendigung der Einwirkung der Nadeln infolge der hohen Viskosität die Fasern in der durch den Nadelungsvorgang im Nadelfilz gefundenen Lage. Zugleich wird der Zusammenhalt zwischen benachbarten Fasern verbessert und so erreicht, daß die Einwirkung der Nadeln nicht auf je einen Faden oder ganz wenige Fäden pro Nadel beschränkt ist, sondern von den unmittelbar von den Nadeln erfaßten Fäden eine Mitnahmewirkung auf benachbarte Fäden ausgeht und so die Festigkeit des Nadelfilzes weiter verbessert wird. Weiterhin erfolgt dadurch eine Ausdehnung der Nadeleinwirkung auf einen größeren Umgebungsbereich der jeweiligen Nadel mit der Folge, daß die gesamte Steinwollebahn trotz der nur punktuellen Einwirkung der Nadeln insgesamt erheblich beispielsweise auf ein Mehrfaches verdichtet wird und mit vergleichsweise hoher Rohdichte wie ein dickes textiles Tuch ähnlich einer Wolldecke guter Festigkeit und Handhabbarkeit sowie bestmöglicher Verformbarkeit vorliegt.It has surprisingly been found that the object is achieved when rock wool with particularly thin fibers is used, and an agent with an unusually high viscosity for such textile additives is added to these fibers in the sense of a finishing agent. Rock wool fibers with a small average fiber thickness of preferably less than 6 µm can be obtained in the transverse blowing process or in the nozzle blowing process using the teaching of the older German patent application P 38 07 420 and are therefore available. Finishing agents with a viscosity of preferably For example, over 2000 cP are also available on the market as mineral oil-based dust binders. The use of particularly thin rock wool fibers reduces their brittleness and resistance to bending, so that the fibers are more easily carried along by the needles of the needle bank and drawn into the rock wool felt or, if the fibers are of sufficient length, are pulled through them. The finishing agent improves the suppleness of the thin fibers considerably. The high viscosity of the finish, which is preferably added to the rock wool in a proportion by weight of the agent of at least 0.05%, based on the weight of the dry rock wool felt, surprisingly allows a sliding movement of that of if the upper limit of 10,000 cP is not exceeded the fibers caught in the needles in their anchoring position in the needle felt, but after the action of the needles has ended due to the high viscosity keeps the fibers in the position found by the needling process in the needle felt. At the same time, the cohesion between adjacent fibers is improved and is achieved in such a way that the action of the needles is not limited to one thread or very few threads per needle, but that the threads directly caught by the needles have a driving effect on adjacent threads and thus the strength of the needle felt is further improved. Furthermore, this causes the action of the needle to extend to a larger surrounding area of the respective needle, with the result that the entire rock wool web is compacted considerably, for example in multiples, despite the only selective action of the needles, and with a comparatively high bulk density like a thick textile cloth similar to a woolen blanket good strength and manageability as well as the best possible formability.
Es gibt Anwendungsfälle, bei denen die Avivage im Nadelfilz verbleiben soll, insbesondere dann, wenn ihre Staubbindewirkung für die weitere Handhabung des Nadelfilzes genutzt werden soll. Bei Verwendung besonders dünner Steinwollefasern und ggfs. einer erhöhten Zusatzmenge an Avivage ist der so gebildete Nadelfilz für die weitere Verarbeitung ausreichend stabil und weist allenfalls ganz geringe Rückfederung auf.There are applications in which the finish should remain in the needle felt, especially when if its dust-binding effect is to be used for the further handling of the needle felt. When using particularly thin rock wool fibers and, if necessary, an increased amount of finishing agent, the needle felt formed in this way is sufficiently stable for further processing and at most has very little springback.
Eine besonders gute Nadelbarkeit einer Filzbahn ergibt sich gemäß dem Ergebnis durchgeführter Versuche dann, wenn sie eine hohe Durchstoßkraft gemäß der Prüfmethode nach Renault aufweist, wie dies in den Ansprüchen 2 und 3 angegeben ist. Filzbahnen einer solchen Durchstoßkraft weisen nach den vorliegenden Erfahrungen eine Struktur aufs welche die Vernadelbarkeit begünstigt.A particularly good needleability of a felt web results from the results of tests carried out if it has a high penetration force according to the Renault test method, as stated in claims 2 and 3. In the experience available, felt webs of such a puncture force have a structure which promotes needlability.
Die Prüfung nach Renault erfolgt in Anlehnung an eine Methode der Firma Renault. Eine Probe, Format 90 mm x 90 mm, Flächengewicht 5,0 kg/m² für lose Wolle und 3,0 kg/m² für gebundenes Material, wird in einer Vorrichtung zwischen gelochten Platten eingespannt und dabei auf eine Dicke von 15 mm zusammengepreßt. Danach wird die Probe mit einem Stempel von 30 mm Durchmesser und 10 mm/min Prüfgeschwindigkeit durchstoßen, dessen Achse mit der Achse der beiden Öffnungen in den Platten fluchtet. Die untere Öffnung hat kreisrunde Form und einen Durchmesser von im Beispielsfalle 40 µm, so daß sich ein Spalt zwischen dem Außenumfang des Stempels und dem Rand der unteren, abstützenden Öffnung von 5 mm Breite ergibt. Gemessen wird die maximale Durchstoßkraft.The Renault test is based on a Renault method. A sample, format 90 mm x 90 mm, basis weight 5.0 kg / m² for loose wool and 3.0 kg / m² for bound material, is clamped in a device between perforated plates and pressed together to a thickness of 15 mm. The sample is then pierced with a stamp of 30 mm in diameter and a test speed of 10 mm / min, the axis of which is aligned with the axis of the two openings in the plates. The lower opening has a circular shape and a diameter of 40 µm in the example, so that there is a gap between the outer circumference of the stamp and the edge of the lower, supporting opening of 5 mm width. The maximum puncture force is measured.
In besonders bevorzugter Weise ist jedoch gemäß Anspruch 4 vorgesehen, daß die genadelte Filzbahn alsbald nach ihrer Nadelung mit einer Wärmebehandlung bei einer Tem peratur zwischen etwa 300° C und 500° C spannungsfrei gemacht wird. Hierdurch werden die durch den Nadelungsvorgang und die damit einhergehenden Verformungen von Fasern in die Fasern eingebrachten Biegespannungen abgebaut und so jegliche Rückfederungstendenz der Steinwollefasern ausgeschaltet. Dabei wird zugleich die Avivage ausgetrieben, jedoch wird deren Haltewirkung dann auch nicht mehr benötigt, da die Rückfederungstendenzen der Fasern nicht mehr vorliegen.In a particularly preferred manner, however, it is provided according to claim 4 that the needled felt web is made stress-free soon after its needling with a heat treatment at a temperature between about 300 ° C and 500 ° C. As a result, the bending stresses introduced into the fibers by the needling process and the associated deformations of fibers are reduced and any springback tendency of the rock wool fibers is thus eliminated. At the same time, the finishing agent is expelled, but its holding effect is then no longer required, since the springback tendencies of the fibers are no longer present.
Gemäß Anspruch 5 erfolgt die Wärmebehandlung bevorzugt unter Druckbelastung des Nadelfilzes, um beim Austreiben der Avivage vor dem Spannungsabbau in den Steinwollefasern eine Formänderung der Fasern infolge des verbleibenden Rückfederungsvermögens zu vermeiden. Wie ohne weiteres ersichtlich ist, ist hierfür nur geringer Druck erforderlich, der ausreicht, die Fasern nach dem Wegfall der hochviskosen Avivage in ihrer nach dem Nadelungsvorgang im Nadelfilz eingenommenen Stellung zu halten, bis die Spannungen abgebaut sind.According to claim 5, the heat treatment is preferably carried out under pressure loading of the needle felt, in order to avoid a change in the shape of the fibers due to the remaining resilience when the finishing agent is driven out before the tension is released in the rock wool fibers. As can be readily seen, only a small amount of pressure is required for this, which is sufficient to hold the fibers in their position in the needle felt after the needling process has ceased, until the tensions are degraded.
Da im Falle einer sogleich nachfolgenden Wärmebehandlung bzw. einer unmittelbar an den Nadelungsvorgang am Ausgang der Nadelmaschine einsetzenden Druckbelastung bis zur Wärmebehandlung die Avivage lediglich für kurze Zeit eine Rückfederung der Steinwollefasern vermeiden muß, kann in diesem Fall mit relativ dickeren Steinfasern an der Obergrenze von 6 µm sowie minimalem Avivagegehalt an der Untergrenze von 0,05 % gearbeitet werden.Since in the event of an immediately subsequent heat treatment or a pressure load immediately starting the needling process at the exit of the needle machine until the heat treatment, the finish only has to avoid springing back of the rock wool fibers, in this case relatively thick stone fibers can reach the upper limit of 6 µm as well as minimum aviva content at the lower limit of 0.05%.
Bei Bedarf kann im Anschluß an die Wärmebehandlung gemäß Anspruch 6 eine Behandlung der Nadelfilzbahn mit einem üblichen Staubbindemittel erfolgen, um bei der weiteren Handhabung Staubanfall zu minimieren.If necessary, after the heat treatment according to claim 6, the needle felt web can be treated with a conventional dust-binding agent in order to minimize dust accumulation during further handling.
Die Ansprüche 7 bis 9 geben besonders bevorzugte Aviva gemittel an. Ein Avivagemittel gemäß Anspruch 8 steht auf dem Markt unter der Bezeichnung "Präparol", und ein solches gemäß Anspruch 9 unter der Bezeichnung "Kompressol" zur Verfügung. Diese Mittel haben eine Viskosität zwischen 5.000 cP und 7.000 cP, während sonstige Staubbindemittel, Schlichten oder ähnliche in der Textilindustrie eingesetzte Stoffe eine Viskosität von lediglich eingen hundert cP besitzen. "Präparol" oder "Kompressol" werden in Wasser emulgiert, und diese Elmusion mit einem Wasseranteil von etwa 90 % kann im Fallschacht unterhalb des Zerfaserungsagregats auf die Fasern aufgedüst und so gleichmäßig verteilt eingebracht werden. Ausgezeichnete Ergebnisse haben sich mit einer Verwendung diese Avivagemittel in einer Menge von 0,02 bis 0,8 Gewichtsprozent, bezogen auf das Trockengewicht der Steinwollebahn, ergeben.Claims 7 to 9 indicate particularly preferred Aviva agents. A softening agent according to claim 8 is available on the market under the name "preparol", and one according to claim 9 is available under the name "compressol". These agents have a viscosity between 5,000 cP and 7,000 cP, while other dust-binding agents, sizes or similar substances used in the textile industry have a viscosity of only a few hundred cP. "Preparol" or "compressol" are emulsified in water, and this elmusion with a water content of about 90% can be sprayed onto the fibers in the chute below the fiberizing unit and thus introduced evenly distributed. Excellent results have been obtained with the use of these finishing agents in an amount of 0.02 to 0.8 percent by weight, based on the dry weight of the rock wool web.
Claims (9)
- A process for the production of needle felt from rock wool, in which stone melt such as basalt, diabase etc., is broken into fibers and deposited on a belt, forming a felt web, and in which the felt web is compressed to a fraction of its original thickness and subjected to a needling process, with the stone fibers being provided with an avivage to improve their suppleness, characterized by the fact that the stone fibers in the felt web are produced with a maximum of the frequency distribution of the fiber thickness below 6 µm, that as an avivage, an agent with a viscosity between 2.000 and 10.000 cP is used, and that the avivage is added with a minimum amount of 0.05 and a maximum amount of 5 percent by weight of the agent, relative to the weight of the dry felt web.
- A process according to claim 1, characterized by the fact that as the felt web, a web (without avivage) is used which withstands a puncture force of at least 80 N, preferably 150 - 200 N, pursuant to the test method according to Renault, using a free ring gap of 5 mm.
- A process according to claim 1, characterized by the fact that for the felt web, an avivage is used so that it withstands a puncture force of at least 100 N, pursuant to the test method according to Renault, using a free ring gap of 5 mm.
- A process according to one of the claims 1 - 3, characterized by the fact that the needled felt web is relaxed with a heat treatment, at a temperature between about 300 °C and 500 °C, very soon after needling.
- A process according to claim 4, characterized by the fact that pressure is applied to the needled felt web, preferably immediately after the needling process.
- A process according to claim 4 or 5, characterized by the fact that a dust binder is added to the heat-treated felt web.
- A process according to claim 1, characterized by the fact that an agent based on mineral oil is used as the avivage.
- A process according to claim 7, characterized by the fact that the agent used is a formulation of alkyl phenol polyglycol ethers, containing mineral oil, which contains preferably about 15 % polycyclic aromatic compounds relative to the mineral oil content.
- A process according to claim 7, characterized by the fact that a mixture of a mineral oil coming from the naphtha fraction with about 20 % predominantly non-ionic emulsifier is used as the avivage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89117542T ATE92548T1 (en) | 1988-10-13 | 1989-09-22 | PROCESS FOR MAKING NEEDLE FELT FROM ROCK WOOL. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3835007A DE3835007A1 (en) | 1988-10-13 | 1988-10-13 | METHOD FOR PRODUCING NEEDLE FELT FROM STONE WOOL |
| DE3835007 | 1988-10-13 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0363707A2 EP0363707A2 (en) | 1990-04-18 |
| EP0363707A3 EP0363707A3 (en) | 1990-09-05 |
| EP0363707B1 true EP0363707B1 (en) | 1993-08-04 |
Family
ID=6365110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89117542A Expired - Lifetime EP0363707B1 (en) | 1988-10-13 | 1989-09-22 | Method for making a needled felt from slag wool |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5057173A (en) |
| EP (1) | EP0363707B1 (en) |
| JP (1) | JPH02153852A (en) |
| AT (1) | ATE92548T1 (en) |
| DE (2) | DE3835007A1 (en) |
| DK (1) | DK465389A (en) |
| ES (1) | ES2044004T3 (en) |
| FI (1) | FI94966B (en) |
| YU (1) | YU46492B (en) |
| ZA (1) | ZA897769B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT394216B (en) * | 1990-07-02 | 1992-02-25 | Polyfelt Gmbh | METHOD FOR THE PRODUCTION OF NEEDLED SPINNING PLANTS |
| DE4201868C2 (en) * | 1992-01-24 | 1994-11-24 | Gruenzweig & Hartmann | Needle aids for the production of needle felt, needle felt produced therewith, and method for the production thereof |
| DE4212842C2 (en) * | 1992-04-16 | 1995-09-07 | Gruenzweig & Hartmann | Needle felt with cover layer and process for its production |
| DE19628477C1 (en) * | 1996-07-15 | 1998-01-22 | Gruenzweig & Hartmann | Needle aids and their use for the production of needle felts and needle felts produced with them |
| US6311375B1 (en) | 2000-07-27 | 2001-11-06 | Gilbert Patrick | Method of needle punching yarns |
| US6796115B1 (en) | 2001-12-19 | 2004-09-28 | Gilbert Patrick | Needle punched yarns |
| US8806900B2 (en) * | 2005-04-04 | 2014-08-19 | Reforcetech As | Ceramic bushing/s consisting local heating/s integrated in apparatus for manufacturing mineral/basalt fibers |
| DE102015212417B4 (en) | 2015-07-02 | 2020-02-20 | Sgl Carbon Se | Use of thin carbon fiber fleeces produced by a horizontal splitting process |
| DE102016202401A1 (en) | 2016-02-17 | 2017-08-17 | Saint-Gobain Isover G+H Ag | Needle aid for the production of needle felt made of mineral wool and needle felt made therewith |
| ITUA20164647A1 (en) * | 2016-06-24 | 2017-12-24 | Eurofibre Spa | ANGLING ASSIST TO BE USED IN THE PRODUCTION OF FERTILIZED FELT IN MINERAL WOOL AND A METHOD FOR REALIZING FELT AGUGLIATI |
| GB201615896D0 (en) * | 2016-09-19 | 2016-11-02 | Knauf Insulation Doo Skofja Loka | Mineral wool insulation |
| CN109267432A (en) * | 2018-09-18 | 2019-01-25 | 西安工程大学 | A kind of basalt fibre wet method felt and its processing method |
| CN114645381B (en) * | 2022-03-10 | 2023-05-26 | 青岛青力环保设备有限公司 | Dehydration and drying integrated equipment for producing soundproof rock cotton felt |
| DE102022126757A1 (en) | 2022-10-13 | 2024-04-18 | Saint-Gobain Isover G+H Aktiengesellschaft | Needle felt and use of a fatty acid amide amine in the manufacture of a needle felt |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1073682B (en) * | 1960-01-21 | Chemische Fabrik Stockhausen a Cie Krefeld | Larding staple fibers | |
| US1899056A (en) * | 1928-08-24 | 1933-02-28 | Banner Rock Corp | Process of making felted mineral fiber |
| US1916011A (en) * | 1930-07-19 | 1933-06-27 | Gen Insulating & Mfg Company | Apparatus for and method of manufacturing insulating material from mineral wool |
| US2707690A (en) * | 1951-04-10 | 1955-05-03 | Owens Corning Fiberglass Corp | Method and apparatus for applying liquid materials to fibers |
| DE1122666B (en) * | 1960-11-19 | 1962-01-25 | Zschimmer & Schwarz | Process for the preparation and melting of textile fibers |
| US3331669A (en) * | 1963-06-21 | 1967-07-18 | Johns Manville | Method and apparatus for forming mineral wool products |
| DE1948553A1 (en) * | 1969-09-25 | 1971-04-01 | Benecke Gmbh J | Bonding fibrous non-woven materials |
| DE2232785C3 (en) * | 1972-07-04 | 1985-08-08 | Bayerische Wollfilzfabriken KG, Offermann, Zeiler Schmid & Co, 8875 Offingen | Porous needle felt as well as related manufacturing processes and applications |
| US4070519A (en) * | 1976-04-27 | 1978-01-24 | Huyck Corporation | High temperature filter fabrics |
| DE3226041A1 (en) * | 1982-07-12 | 1984-01-12 | Didier-Werke Ag, 6200 Wiesbaden | METHOD FOR PRODUCING NEEDLE FIBER BLANKETS FROM MINERAL, IN PARTICULAR FIREPROOF, FIBER AND FIBER BLANKETS PRODUCED BY THE PROCESS |
| DE3406932A1 (en) * | 1984-02-25 | 1985-09-19 | Didier-Werke Ag, 6200 Wiesbaden | Process for compacting a fibre mat |
-
1988
- 1988-10-13 DE DE3835007A patent/DE3835007A1/en not_active Withdrawn
-
1989
- 1989-09-21 DK DK465389A patent/DK465389A/en not_active Application Discontinuation
- 1989-09-22 DE DE8989117542T patent/DE58905136D1/en not_active Expired - Fee Related
- 1989-09-22 AT AT89117542T patent/ATE92548T1/en not_active IP Right Cessation
- 1989-09-22 EP EP89117542A patent/EP0363707B1/en not_active Expired - Lifetime
- 1989-09-22 ES ES89117542T patent/ES2044004T3/en not_active Expired - Lifetime
- 1989-09-25 YU YU184689A patent/YU46492B/en unknown
- 1989-09-26 US US07/416,228 patent/US5057173A/en not_active Expired - Fee Related
- 1989-10-12 JP JP1264130A patent/JPH02153852A/en active Pending
- 1989-10-13 ZA ZA897769A patent/ZA897769B/en unknown
- 1989-10-13 FI FI894871A patent/FI94966B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK465389A (en) | 1990-04-14 |
| US5057173A (en) | 1991-10-15 |
| DE3835007A1 (en) | 1990-04-19 |
| DK465389D0 (en) | 1989-09-21 |
| FI94966B (en) | 1995-08-15 |
| YU46492B (en) | 1993-10-20 |
| JPH02153852A (en) | 1990-06-13 |
| ES2044004T3 (en) | 1994-01-01 |
| YU184689A (en) | 1990-12-31 |
| EP0363707A3 (en) | 1990-09-05 |
| FI894871A0 (en) | 1989-10-13 |
| ATE92548T1 (en) | 1993-08-15 |
| DE58905136D1 (en) | 1993-09-09 |
| EP0363707A2 (en) | 1990-04-18 |
| ZA897769B (en) | 1990-08-29 |
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